Shell-and-plate fin heat exchanger

Abstract

The utility model provides a kind of shell-plate fin heat exchanger, comprising: shell, the shell is cylindrical and the inside is limited with heat exchange cavity, and at the opposite ends in the axial direction of shell is respectively provided with air inlet and air outlet with heat exchange cavity communication;And heat exchange core, the heat exchange core is arranged in the heat exchange cavity of shell, and at the opposite ends of heat exchange core is respectively provided with heat storage medium inlet and heat storage medium outlet, especially, the heat exchange core is plate fin heat exchange core, including alternately arranged multiple air fins and multiple heat storage medium fins and multiple partitions, wherein, air in air fin channel and heat storage medium in heat storage medium fin channel flow along different direction.The shell-plate fin heat exchanger has the advantages of good pressure-bearing capacity of shell-and-tube heat exchanger and high efficiency, compact structure of plate fin heat exchanger, and simplifies welding process, reduces equipment weight.

Description

Technical Field

[0001] This application relates to the field of heat exchange equipment technology, and more specifically to a shell-plate-fin heat exchanger. Background Technology

[0002] Compressed air energy storage technology plays an important role in power systems, including peak shaving and valley filling, primary frequency regulation, improving grid stability, improving power quality, increasing grid utilization, and increasing the utilization rate of renewable energy. It is considered a key technology suitable for large-scale power energy storage and has been vigorously developed worldwide, especially in China.

[0003] Heat exchangers are crucial components of compressed air energy storage systems, accounting for approximately 20% of the system's equipment investment. Currently, most heat exchangers in compressed air energy storage systems are hairpin, plate-fin, or finned-tube heat exchangers. These heat exchangers need to operate under high pressure and high temperature conditions, but each has its own technical shortcomings.

[0004] In the case of hairpin heat exchangers, the heat exchange components are smooth circular tubes during gas-liquid heat exchange, resulting in relatively low heat exchange efficiency. Furthermore, the large size and weight of the equipment contribute to high overall costs. Moreover, in some large-scale, high-pressure projects, hairpin heat exchangers have limited pressure-bearing capacity under high-pressure conditions, failing to meet the demands of higher-pressure operations.

[0005] Although finned tube heat exchangers have a more compact structural design than hairpin heat exchangers, their overall size is still relatively large, resulting in higher equipment manufacturing costs. Furthermore, their pressure-bearing capacity is not particularly outstanding under high-pressure conditions. This limits their application in high-pressure environments, such as in large compressed air energy storage systems.

[0006] In some compressed air energy storage projects, plate-fin heat exchangers are sometimes used. Although they have high heat exchange efficiency and a compact structure, their pressure resistance is usually no more than 10 MPa, and for aluminum plate-fin heat exchangers, their high-temperature resistance is also limited, not exceeding 200°C. This becomes a key issue limiting their application in high-pressure, high-temperature compressed air energy storage systems.

[0007] In the design of traditional heat exchangers, in order to achieve gas-liquid heat exchange under high pressure conditions, large-sized heat exchange tubes or complex structural designs are often required. This not only increases the weight of the equipment but also significantly increases the cost, thereby affecting the overall economic efficiency and feasibility of the compressed air energy storage system.

[0008] Therefore, there is an urgent need to develop heat exchangers with high heat exchange efficiency, strong pressure resistance, compact structure and low cost to improve the technical and economic efficiency of CAES systems and shorten the investment payback period. Utility Model Content

[0009] In view of the above reasons, this disclosure proposes a shell-plate-fin heat exchanger, which aims to overcome the shortcomings of the prior art and improve the overall performance of compressed air energy storage systems.

[0010] According to one aspect of this disclosure, a shell-plate-fin heat exchanger is provided, comprising:

[0011] A housing, which is cylindrical and defines a heat exchange cavity inside, has an air inlet and an air outlet communicating with the heat exchange cavity at opposite ends in the axial direction of the housing; and

[0012] A heat exchange core is arranged inside the heat exchange chamber of the shell, and a heat storage medium inlet and a heat storage medium outlet are respectively provided at opposite ends of the heat exchange core.

[0013] Its characteristic is that the heat exchange core is a plate-fin type heat exchange core, and includes:

[0014] Alternating arrangement of multiple air fins and multiple heat storage medium fins; and

[0015] Multiple baffles are used, with adjacent air fins and heat storage medium fins separated by a baffle. Each air fin and its adjacent baffles on both sides together form a set of air fin channels, and each heat storage medium fin and its adjacent baffles on both sides together form a set of heat storage medium fin channels. The air fin channels are connected to the air inlet and air outlet, and the heat storage medium fin channels are connected to the heat storage medium inlet and heat storage medium outlet, so that the air in the air fin channels and the heat storage medium in the heat storage medium fin channels flow in different directions.

[0016] The shell-and-plate heat exchanger disclosed herein combines the advantages of shell-and-tube heat exchangers (high pressure resistance) and plate-and-fin heat exchangers (high efficiency and compact structure). Compared to traditional plate-and-fin heat exchangers, this disclosure places the core within a circular shell, with high-pressure air flowing through the shell side and the heat storage medium flowing through the plate side. The high-pressure air in the shell side compresses the internal partitions and fins of the core, achieving a tight fit and significantly improving the pressure resistance of the plate-and-fin core. Furthermore, the heat exchange core of this disclosure does not require brazing or diffusion welding; instead, only external sealing welding of the hot and cold flow channels is performed, thus simplifying the welding process. Compared to traditional shell-and-tube heat exchangers, this disclosure eliminates the tube sheet, greatly reducing the weight of the equipment.

[0017] Preferably, the heat storage medium inlet and the air outlet are located at the first end of the shell-plate-fin heat exchanger, and the heat storage medium outlet and the air inlet are located at the second end opposite to the first end. This arrangement allows high-pressure air and the heat storage medium to flow in substantially parallel and opposite directions, thereby achieving higher heat exchange efficiency.

[0018] Furthermore, each heat storage medium fin includes: a main heat exchange fin that defines a main heat exchange channel for the heat storage medium fin channel; an inlet-side guide fin that connects the main heat exchange fin to the heat storage medium inlet and defines an inlet-side guide channel for the heat storage medium fin channel; and an outlet-side guide fin that connects the main heat exchange fin to the heat storage medium outlet and defines an outlet-side guide channel for the heat storage medium fin channel.

[0019] By installing guide fins at the inlet and outlet of the thermal storage medium channel, the fluid distribution entering the thermal storage medium channel can be made more uniform, while improving the support strength at the inlet and outlet of the thermal storage medium.

[0020] Preferably, the main heat exchange channel and the air fin channel are both arranged along the axial direction; the inlet-side guide channel and the outlet-side guide channel are both arranged perpendicular to the axial direction.

[0021] Furthermore, the depth of the heat storage medium fin channel is lower than the depth of the air fin channel. For example, the depth of the heat storage medium fin channel is 1-2 mm, and the depth of the air fin channel is 4-10 mm.

[0022] By adjusting the channel depth, the flow rates of high-pressure air and the heat storage medium can be regulated, allowing for a match between the heat exchange performance on the hot and cold sides, thereby optimizing heat exchange and pressure drop performance. Furthermore, the heat storage medium channel employs a low-profile flow channel design with low fin height and high support strength, better meeting the requirements of high-temperature and high-pressure applications.

[0023] Furthermore, an air-side seal is provided at the edge of each air fin to seal the air fin channel; and a heat storage medium side seal is provided at the edge of each heat storage medium fin to seal the heat storage medium fin channel, thereby ensuring that the fluid does not leak and maintaining the system's airtightness and safety.

[0024] Preferably, the shell-plate heat exchanger further includes a baffle assembly extending radially between the shell and the heat exchange core to axially isolate the bypass passage between the shell and the heat exchange core. By providing the baffle assembly between the shell and the heat exchange core, high-pressure air is ensured to pass through the heat exchange core rather than exiting through a bypass passage outside the heat exchange core, thus guaranteeing the heat exchanger's heat transfer performance.

[0025] Furthermore, when the shell-plate heat exchanger is arranged such that its axial direction is parallel to the horizontal plane, the baffle assembly includes: at least one lower baffle disposed between the bottom of the heat exchange core and the shell, and configured to support the heat exchange core while providing a partition; and at least one upper baffle located above the at least one lower baffle and together with the at least one lower baffle forming a closed partition surface that blocks the bypass passage.

[0026] Preferably, the baffle assembly includes a plurality of lower baffles arranged side by side in the axial direction, and the baffle assembly further includes a support plate attached to the upper edge of the plurality of lower baffles, the support plate extending in the axial direction and conforming to the bottom of the heat exchange core to support the heat exchange core. This combination of multiple lower baffles and support plate provides better support for the heat exchange core and further improves the pressure-bearing capacity of the heat exchange core.

[0027] In summary, the shell-plate-fin heat exchanger described in this disclosure combines the advantages of shell-and-tube heat exchangers (high pressure resistance) and plate-fin heat exchangers (high efficiency and compact structure) with existing heat exchangers. By placing the plate-fin heat exchange core inside a circular shell, high-pressure air flows through the shell side and the heat storage medium flows through the plate side, significantly improving the heat exchanger's pressure resistance. It eliminates the need for brazing or diffusion welding, and the high-pressure air in the shell side presses the internal baffles and fins of the core together, achieving a tight fit between the plates and simplifying the welding process. The tube sheet is eliminated, thus greatly reducing the equipment weight. Furthermore, the baffles between the shell and the heat exchange core not only improve the pressure resistance of the heat exchange core but also reduce air bypassing outside the heat exchange core. Therefore, the shell-plate heat exchanger disclosed herein combines the advantages of high heat exchange efficiency, strong pressure resistance, compact structure and low cost, and has broad application prospects in compressed air energy storage systems, air compressor factories, power engineering, chemical engineering, hydrogen energy and other fields. It can significantly improve the heat exchange efficiency and economy of the equipment, shorten the investment payback period, and is a powerful innovation to promote the development of compressed air energy storage technology. Attached Figure Description

[0028] The features and advantages of one or more embodiments of the present invention will become more readily apparent from the following description with reference to the accompanying drawings. The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. The drawings are not drawn to scale and some features may be enlarged or reduced to show details of specific components. In the drawings:

[0029] Figure 1 This is a schematic diagram of the overall structure of a shell-plate-fin heat exchanger according to an embodiment of the present disclosure.

[0030] Figure 2 This is a cross-sectional view of a shell-plate-fin heat exchanger according to an embodiment of the present disclosure.

[0031] Figure 3 This is a schematic diagram of the plate-fin heat exchange core in a shell-plate-fin heat exchanger according to an embodiment of the present disclosure.

[0032] Figure 4A This is a schematic diagram of the heat storage medium fins in a shell-plate-fin heat exchanger according to an embodiment of the present disclosure.

[0033] Figure 4B It is along Figure 4A The image shows a cross-sectional view of the heat storage medium fins taken from line AA.

[0034] Figure 5A This is a schematic diagram of air fins in a shell-plate heat exchanger according to an embodiment of the present disclosure.

[0035] Figure 5B It is along Figure 5A The cross-sectional view of the air fins taken by line BB.

[0036] Figure 6A This is a schematic diagram of a shell with a baffle assembly installed in a shell-plate heat exchanger according to an embodiment of the present disclosure.

[0037] Figure 6B It is along Figure 6A The image shows a cross-sectional view of the housing with the baffle assembly installed, taken from line CC.

[0038] Figure 7 This is a schematic diagram of the lower baffle in a shell-plate-fin heat exchanger according to an embodiment of the present disclosure.

[0039] Figure 8 This is a schematic diagram of a support plate in a shell-plate-fin heat exchanger according to an embodiment of the present disclosure.

[0040] Figure 9 This is a schematic diagram of the upper baffle in a shell-plate heat exchanger according to an embodiment of the present disclosure.

[0041] Explanation of icon numbers:

[0042] 1. Shell-plate heat exchanger

[0043] 10. Housing; 12. Air inlet; 14. Air outlet

[0044] 20. Heat exchanger core; 22. Heat storage medium inlet; 24. Heat storage medium outlet

[0045] 26. Baffle 200, heat storage medium fins

[0046] 201. Main heat exchange fins; 202. Inlet-side guide fins; 203. Outlet-side guide fins.

[0047] 205. Side seal of heat storage medium; 208. Finned channel of heat storage medium.

[0048] 210. Air fin; 215. Air side seal; 218. Air fin channel

[0049] 30. Baffle assembly; 32. Lower baffle.

[0050] 34. Support plate 36. Upper baffle Detailed Implementation

[0051] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0052] It should be noted that the terminology used herein is for the purpose of describing particular implementations only and is not intended to limit the exemplary implementations according to this disclosure. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise.

[0053] Combination Figures 1 to 3 This disclosure provides a shell-plate-fin heat exchanger 1, which includes: a shell 10, which is cylindrical and defines a heat exchange cavity inside, with an air inlet 12 and an air outlet 14 communicating with the heat exchange cavity at opposite ends in the axial direction of the shell 10; and a heat exchange core 20, which is arranged in the heat exchange cavity of the shell 10, with a heat storage medium inlet 22 and a heat storage medium outlet 24 at opposite ends of the heat exchange core 20. The special feature of this disclosure is that the heat exchange core 20 is a plate-fin heat exchange core.

[0054] Specifically, the plate-fin heat exchange core includes multiple air fins 210 and multiple heat storage medium fins 200 arranged alternately, as well as multiple baffles 26.

[0055] See Figures 4A to 5B The adjacent air fins 210 and the heat storage medium fins 200 are separated by a partition 26, and each air fin 210 and the adjacent partitions 26 on both sides together form a set of air fin channels 218, and each heat storage medium fin 200 and the adjacent partitions 26 on both sides together form a set of heat storage medium fin channels 208. The air fin channels 218 are connected to the air inlet 12 and the air outlet 14, and the heat storage medium fin channels 208 are connected to the heat storage medium inlet 22 and the heat storage medium outlet 24, so that the air in the air fin channels 218 and the heat storage medium in the heat storage medium fin channels 208 flow in different directions.

[0056] This disclosure employs a shell-and-plate heat exchanger structure that combines the high pressure-bearing capacity of shell-and-tube heat exchangers with the high efficiency and compact structure of plate-and-fin heat exchangers. With this configuration, high-pressure air enters the heat exchange chamber through the air inlet and applies pressure to the core from the outside, causing the fins inside the core to fit tightly against the baffles, thus achieving core compression and significantly improving the pressure-bearing capacity of the plate-and-fin core. In this case, according to the shell-and-plate heat exchanger structure of this disclosure, the heat exchange core does not require brazing or diffusion welding; instead, only sealing welding of the hot and cold flow channels on the outside of the core is required, thereby simplifying the welding process.

[0057] The selection of fin materials can be based on a comprehensive consideration of their pressure resistance, temperature resistance, corrosion resistance, and cost-effectiveness to ensure stable operation under high temperature and high pressure environments. Preferably, the fin material can be aluminum alloy, stainless steel, titanium alloy, or nickel-based alloy.

[0058] Furthermore, as an example of an arrangement, such as Figures 1 to 3 As shown, the heat storage medium inlet 22 and the air outlet 14 can be located at the first end of the shell-plate-fin heat exchanger, and the heat storage medium outlet 24 and the air inlet 12 can be located at the second end of the shell-plate-fin heat exchanger opposite to the first end. With this arrangement, high-pressure air and the heat storage medium can flow in approximately parallel and opposite directions, thereby achieving higher heat exchange efficiency.

[0059] Specifically, Figure 4A and Figure 4B A schematic diagram of the heat storage medium fins 200 is shown. As shown, each heat storage medium fin 200 includes: a main heat exchange fin 201 that defines a main heat exchange channel of the heat storage medium fin channel 208; an inlet-side guide fin 202 that connects the main heat exchange fin 201 and the heat storage medium inlet 22 and defines an inlet-side guide channel of the heat storage medium fin channel 208; and an outlet-side guide fin 203 that connects the main heat exchange fin 201 and the heat storage medium outlet 24 and defines an outlet-side guide channel of the heat storage medium fin channel 208.

[0060] As an example arrangement, the main heat exchange channel can be roughly parallel to the air fin channel 218, and the inlet-side guide channel and the outlet-side guide channel are roughly perpendicular to the air fin channel 218.

[0061] By installing guide fins at the inlet and outlet of the thermal storage medium channel, the fluid distribution entering the thermal storage medium channel can be made more uniform, while improving the support strength at the inlet and outlet of the thermal storage medium.

[0062] Further, refer to Figure 4A ,4B 5A and Figure 5B The depth of the heat storage medium finned channel 208 is set to be lower than the depth of the air finned channel 218. For example, the depth of the air finned channel 218 is 4–10 mm, while the depth of the heat storage medium finned channel 208 is 1–2 mm. By adjusting the channel depth, the flow rates of the high-pressure air and the heat storage medium can be adjusted to match the heat exchange performance on the hot and cold sides, thereby optimizing the heat exchange and pressure drop performance. Furthermore, the heat storage medium channel adopts a low-profile flow channel design with low fin height and high support strength, better meeting the requirements of high-temperature and high-pressure applications.

[0063] Furthermore, a heat storage medium side seal 205 is provided at the edge of each heat storage medium fin 200 to seal the heat storage medium fin channel 208; similarly, an air side seal 215 is provided at the edge of each air fin 210 to seal the air fin channel 218, thereby ensuring that the fluid does not leak and maintaining the system's airtightness and safety.

[0064] Furthermore, since the shell 10 and the heat exchange core 20 are not tightly fitted, a bypass channel is formed between the shell 10 and the heat exchange core 20. In order to prevent the high-pressure gas entering the shell 10 from flowing directly out of the air outlet 14 through the bypass channel between the shell 10 and the heat exchange core 20, the shell-plate fin heat exchanger according to this disclosure also includes a baffle assembly 30, which extends approximately radially between the shell 10 and the heat exchange core 20 to axially block the bypass channel between the shell 10 and the heat exchange core 20.

[0065] Therefore, by setting a baffle assembly 30 between the shell 10 and the heat exchange core 20, it is ensured that high-pressure air passes through the heat exchange core 20 instead of flowing out through the bypass channel outside the heat exchange core, thus guaranteeing the heat exchange performance of the heat exchanger.

[0066] As a concrete example, see Figure 6A and Figure 6B When the shell-plate heat exchanger is placed horizontally, i.e. arranged such that the axial direction of the shell is parallel to the horizontal plane, the baffle assembly 30 may include at least one lower baffle 32 and at least one upper baffle 36. The at least one lower baffle 32 is disposed between the bottom of the heat exchange core 20 and the shell to support the weight of the heat exchange core while providing a partition. The at least one upper baffle 36 is disposed above the at least one lower baffle 32 and together with the at least one lower baffle, forms a complete and closed radial partition.

[0067] Preferably, such as Figure 6A and Figure 6BAs shown, the baffle assembly includes a plurality of lower baffles 32 arranged side by side in the axial direction (two lower baffles 32 are shown), and also includes a support plate 34 attached to the upper edge of the plurality of lower baffles 32. The support plate 34 extends in the axial direction and fits against the bottom of the heat exchange core 20 to support the heat exchange core 20. This combination of the plurality of lower baffles 32 and the support plate 34 provides better support for the heat exchange core 20 and further improves the pressure resistance of the heat exchange core 20.

[0068] In summary, this disclosure provides a shell-and-plate heat exchanger comprising a shell and a plate-and-fin heat exchange core disposed inside the shell, which has at least the following advantages:

[0069] ① It adopts a shell-plate-fin heat exchanger structure, which combines the advantages of shell-and-tube heat exchangers (good pressure bearing capacity) and plate-fin heat exchangers (high efficiency and compact structure).

[0070] ② Compared with traditional plate-fin heat exchangers, the scheme disclosed in this paper places the core inside a circular shell, with high-pressure air flowing through the shell side and the heat storage medium flowing through the plate side. The high-pressure air in the shell side presses the internal partitions and fins of the core tightly together, achieving a close fit and greatly improving the pressure-bearing capacity of the plate-fin core.

[0071] The heat exchange core disclosed herein adopts a plate-fin structure, which eliminates the need for brazing or diffusion welding. Instead, the hot and cold flow channels are sealed only on the outside of the core, thus simplifying the welding process.

[0072] ④ Compared with traditional shell-and-tube heat exchangers, this disclosure eliminates the tube sheet, greatly reducing the weight of the equipment.

[0073] ⑤ The heat storage medium fin channel is lower than the air channel. By adjusting the channel depth, the flow rate of air and heat storage fluid is adjusted to match the heat exchange performance on the hot and cold sides, thereby optimizing the heat exchange and pressure drop performance.

[0074] ⑥ The heat storage medium fin channel adopts a low flow channel design, which makes the heat storage medium fin height low and the support strength high, meeting the requirements of high temperature and high pressure use.

[0075] ⑦ The inlet and outlet of the heat storage medium flow channel are equipped with guide fins to make the fluid distribution more uniform and improve the support strength at the inlet and outlet.

[0076] ⑧ A baffle is installed between the shell and the core to reduce the bypass flow of high-pressure air and to support the core, thereby improving the core's pressure resistance.

[0077] The various embodiments and variations of this utility model have been described in detail above. However, those skilled in the art should understand that this utility model is not limited to the specific embodiments and variations described above, but may include various other possible combinations and arrangements. Other variations and modifications can be implemented by those skilled in the art without departing from the spirit and scope of this utility model. All these variations and modifications fall within the scope of this utility model. Moreover, all components described herein can be replaced by other technically equivalent components.

Claims

1. A shell-and-plate heat exchanger, comprising: The housing (10) is cylindrical and has a heat exchange cavity defined inside. An air inlet (12) and an air outlet (14) communicating with the heat exchange cavity are respectively provided at opposite ends of the housing (10) in the axial direction. as well as A heat exchange core (20) is arranged inside the heat exchange cavity of the housing (10), and a heat storage medium inlet (22) and a heat storage medium outlet (24) are respectively provided at opposite ends of the heat exchange core (20). The feature is that the heat exchange core (20) is a plate-fin heat exchange core, and includes: Alternating arrangement of multiple air fins (210) and multiple heat storage medium fins (200); and Multiple baffles (26) are provided, and adjacent air fins (210) and heat storage medium fins (200) are separated by a baffle (26). Each air fin (210) and the adjacent baffles (26) on both sides together form a set of air fin channels (218), and each heat storage medium fin (200) and the adjacent baffles (26) on both sides together form a set of heat storage medium fin channels (208). The air fin channels (218) are connected to the air inlet (12) and the air outlet (14), and the heat storage medium fin channels (208) are connected to the heat storage medium inlet (22) and the heat storage medium outlet (24), so that the air in the air fin channels (218) and the heat storage medium in the heat storage medium fin channels (208) flow in different directions.

2. The shell-plate-fin heat exchanger according to claim 1, characterized in that, The heat storage medium inlet (22) and the air outlet (14) are located at the first end of the shell-plate heat exchanger, and the heat storage medium outlet (24) and the air inlet (12) are located at the second end of the shell-plate heat exchanger opposite to the first end.

3. The shell-plate-fin heat exchanger according to claim 1, characterized in that, Each of the said heat storage medium fins (200) includes: Main heat exchange fins (201), the main heat exchange fins (201) defining the main heat exchange channel of the heat storage medium fin channel (208); An inlet-side guide fin (202) is provided, which connects the main heat exchange fin (201) and the heat storage medium inlet (22), and defines an inlet-side guide channel for the heat storage medium fin channel (208); and An outlet-side guide fin (203) is connected between the main heat exchange fin (201) and the heat storage medium outlet (24), and defines the outlet-side guide channel of the heat storage medium fin channel (208).

4. The shell-plate-fin heat exchanger according to claim 3, characterized in that, Both the main heat exchange channel and the air fin channel (218) are arranged along the axial direction; The inlet-side guide channel is arranged perpendicular to the axial direction; and The outlet-side guide channel is arranged perpendicular to the axial direction.

5. The shell-plate-fin heat exchanger according to claim 1, characterized in that, in, The depth of the heat storage medium fin channel (208) is lower than the depth of the air fin channel (218).

6. The shell-plate-fin heat exchanger according to claim 5, characterized in that, The depth of the air fin channel (218) is 4–10 mm; and The depth of the heat storage medium fin channel (208) is 1-2 mm.

7. The shell-plate heat exchanger according to claim 1, characterized in that, An air side seal (215) is provided at the edge of each air fin (210) to seal the air fin channel (218); and A heat storage medium side seal (205) is provided at the edge of each of the heat storage medium fins (200) to seal the heat storage medium fin channel (208).

8. The shell-plate heat exchanger according to any one of claims 1 to 7, characterized in that, The shell-plate heat exchanger also includes: A baffle assembly (30) extends radially between the housing (10) and the heat exchange core (20) to block the bypass passage between the housing (10) and the heat exchange core (20) in the axial direction.

9. The shell-plate heat exchanger according to claim 8, characterized in that, The shell-and-plate heat exchanger is arranged such that the axial direction is parallel to the horizontal plane, and the baffle assembly (30) includes: At least one lower baffle (32) disposed between the bottom of the heat exchange core (20) and the housing (10), and configured to support the heat exchange core (20) while providing a partition; and At least one upper baffle (36) is located above the at least one lower baffle (32) and together with the at least one lower baffle (32) forms a closed partition that blocks the bypass passage.

10. The shell-plate-fin heat exchanger according to claim 9, characterized in that, The baffle assembly includes a plurality of lower baffles (32) arranged side by side in the axial direction, and the baffle assembly also includes a support plate (34) attached to the upper edge of the plurality of lower baffles (32), the support plate (34) extending in the axial direction and fitting against the bottom of the heat exchange core (20) to support the heat exchange core (20).

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